Tiltrotor aircraft



FIG. 1 is a front perspective view of a tiltrotor aircraft with the rotor nacelles facing forward, doors on the bottom of the fuselage open, and landing gear down;

FIG. 2 is a front elevational view of the aircraft in FIG. 1;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is a front perspective view of the aircraft in FIG. 1 with the rotor nacelles facing upward, doors on the bottom of the fuselage open, and landing gear down;

FIG. 9 is a front elevational view of the aircraft in FIG. 8;

FIG. 10 is a rear elevational view thereof;

FIG. 11 is a right side view thereof;

FIG. 12 is a left side view thereof;

FIG. 13 is a top view thereof;

FIG. 14 is a bottom view thereof;

FIG. 15 is a front perspective view of the aircraft of FIG. 1 with the rotor nacelles facing forward, doors on the bottom of the fuselage closed, and landing gear up;

FIG. 16 is a front elevational view of the aircraft in FIG. 15;

FIG. 17 is a rear elevational view thereof;

FIG. 18 is a right side view thereof;

FIG. 19 is a left side view thereof;

FIG. 20 is a top view thereof;

FIG. 21 is a bottom view thereof;

FIG. 22 is a front perspective view of the aircraft of FIG. 1 with the rotor nacelles facing upward, doors on the bottom of the fuselage closed, and landing gear up;

FIG. 23 is a front elevational view of the aircraft in FIG. 22;

FIG. 24 is a rear elevational view thereof;

FIG. 25 is a right side view thereof;

FIG. 26 is a left side view thereof;

FIG. 27 is a top view thereof; and,

FIG. 28 is a bottom view thereof.

The broken lines in the drawings represent unclaimed environmental subject matter and form no part of the claim. 

CLAIM The ornamental design for a tiltrotor aircraft, substantially as shown and described. 